year = int(input("请输入年份："))
month = int(input("请输入月份："))
if month in [1, 3, 5, 7, 8, 10, 12]:
    print(f"{year}年{month}月有31天")
elif month in [4, 6, 9, 11]:
    print(f"{year}年{month}月有31天")
elif month ==2:
    if year % 400 == 0 or (year % 4 == 0 and year % 100 != 0):
        print(f"{year}年{month}月有29天")
    else:print(f"{year}年{month}月有28天")